Home / Calculators / Cycle and ovulation
Every calculator in one place, free and with no sign-up. Results show instantly — we don't hide them behind a form. Each one explains what the number means, where the reference ranges come from, and what it cannot tell you.
A calculator sees three or four figures. A specialist sees your history, your scans, your partner's results, and how you actually responded to treatment. If you're between cycles, changing clinics, or something in your results doesn't add up, a second opinion is the fastest way to find out whether anything would be done differently.
Free first consultation. No obligation to start treatment, and it doesn't affect your care at your current clinic.
These tools provide general information and are not a diagnosis or a substitute for assessment by a qualified clinician. Reference ranges and sources are stated on each calculator. Predictive estimates describe groups of people and cannot predict an individual outcome.
Timing tools for anyone tracking a cycle or trying to conceive. Free, and none of them are contraception.
The luteal phase — ovulation to period — is the stable part of a cycle at roughly 14 days. The follicular phase is what varies. So ovulation is estimated backwards from the next period, not forwards from the last, and a 35-day cycle ovulates around day 21 rather than day 17.
Even done correctly, calendar prediction is limited. More than half of women vary by over a week across a year, and ovulation shifts with stress, illness and travel. ASRM suggests intercourse every one to two days across the cycle rather than aiming at a predicted date.
A calculator sees three or four figures. A specialist sees your history, your scans, your partner's results, and how you actually responded to treatment. If you're between cycles, changing clinics, or something in your results doesn't add up, a second opinion is the fastest way to find out whether anything would be done differently.
Free first consultation. No obligation to start treatment, and it doesn't affect your care at your current clinic.
A calculator sees three or four figures. A specialist sees your history, your scans, your partner's results, and how you actually responded to treatment. If you're between cycles, changing clinics, or something in your results doesn't add up, a second opinion is the fastest way to find out whether anything would be done differently.
Free first consultation. No obligation to start treatment, and it doesn't affect your care at your current clinic.
What these tools measure, explained in full.
Comparing centres? See every ART-registered fertility clinic in Bangalore, scored on the same five signals.
